Capercaillie(Tetrao urogallus)Lekking sites in fragmented Finnish forest landscape
作者:
Pekka Helle,
Timo Helle,
Harto Lindén,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1994)
卷期:
Volume 9,
issue 1-4
页码: 386-396
ISSN:0282-7581
年代: 1994
DOI:10.1080/02827589409382856
出版商: Taylor & Francis Group
关键词: Tetrao urogallus;lekking sites;boreal forest landscapes;forest fragmentation.
数据来源: Taylor
摘要:
The location of Capercaillie lekking sites was compared in forest mosaics of different level of fragmentation. In north Finland the stand characteristics of the lekking sites did not differ from those of randomly selected stands in the 1950s judged from forestry maps and stand registers. In the 1980s, when forestry had considerably altered stand structure, lekking stands were older, larger and had a higher timber volume than random stands. These features evenly changed from the lek centre to the distance of 4 km, to which distance the adjacent areas were assessed. Southern and central Finnish analyses, based on topographic maps, showed that the proportion of forest distinctly decreased with increasing distance from a lek centre, up to a distance of 1–1.5 km. The average patch size of lekking stands were largest in the north (where both cut areas and remaining stands are large) and smallest in central Finland dominated by fine‐grained forest landscape. The results are discussed in terms of landscape ecology and forestry planning.
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